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Amplite® Fluorimetric Peroxidase (HRP) Assay Kit
Near Infrared Fluorescence
Peroxidase is a small molecule (MW ~40 KD) that can usually be conjugated to an antibody in a 4:1 ratio. Due to its small size, it rarely causes steric hindrance problem with antibody/antigen complex formation. Peroxidase is inexpensive compared to other labeling enzymes. The major disadvantage associated with peroxidase is their low tolerance to many preservatives such as sodium azide that inactivates peroxidase activity even at low concentration. HRP conjugates are extensively used as secondary detection reagents in ELISAs, immuno-histochemical techniques and Northern, Southern and Western blot analyses. We offer this quick (10 min) HRP assay in a one-step, homogeneous, no wash assay system. This kit uses Amplite® IR, our near infrared flurogenic HRP substrate. Amplite® IR generates a substance that has maximum absorption of 647 nm with maximum emission at 670 nm. This near infrared absorption and fluorescence minimize the assay background that is often caused by the autoabsorption and/or autofluorescence of biological samples that rarely absorb light beyond 600 nm. The kit can be used for ELISAs, characterizing kinetics of enzyme reaction and high throughput screening of oxidase inhibitors, etc. The kit provides an optimized 'mix and read' assay protocol that is compatible with HTS liquid handling instruments.
HRP dose response was measured with Amplite® Fluorimetric Peroxidase Assay Kit in a solid black 384-well plate using a Gemini fluorescence microplate reader (Molecular Devices).
HRP dose response was measured with Amplite® Fluorimetric Peroxidase Assay Kit in a solid black 384-well plate using a Gemini fluorescence microplate reader (Molecular Devices).
CatalogSize
Price
Quantity
11553500 Tests
Price
 
Spectral properties

Excitation (nm)648
Emission (nm)668
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
UNSPSC12171501
Instrument settings

Absorbance microplate reader
Absorbance647 ± 5 nm
Recommended plateClear bottom

Fluorescence microplate reader
Excitation640nm
Emission680 nm
Cutoff665 nm
Recommended plateSolid black
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Page updated on October 13, 2025